Abstract W P5: Improvements in Procedural Times in the Evolution of Endovascular Treatment of Acute Ischemic Stroke

Stroke ◽  
2015 ◽  
Vol 46 (suppl_1) ◽  
Author(s):  
Don Frei ◽  
Aman Patel ◽  
Rishi Gupta ◽  
Richard Bellon ◽  
Daniel Huddle ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Treatment Method ◽  
Case Review ◽  
Procedure Time ◽  
Patient Demographics ◽  
Timi Score ◽  
Catheter Size ◽  
Review Study ◽  
Average Procedure Time

Purpose: Endovascular therapies are increasingly used in the revascularization of acute ischemic stroke from large vessel occlusions. There have been many design improvement of these devices from their initial implementation to the recent newer generations of devices. The goal of this case review study was to assess if there was corresponding improvement in procedural times over the course of the evolution of these devices. Methods: We pooled prospective (Pivotal, PICS, START) and retrospective/registry (POST, RetroSTART, Speed 054) Penumbra trials. All obtained treatment at <8 hours. Data was collected and analyzed. Tested covariates (patient demographics, procedure time points) were considered in the multivariable model. Results: Among 1028 pooled subjects, 93 received treatment outside the 8 hour window, and an additional 8 subjects were excluded due to missing key data. The remaining 927 patients had a mean age of 65.9 years (SD=15.1) and 51.7% (478/925) were female. At admission, the average NIHSS was 17.4 (SD=6.2) and 100% of patients had a TIMI score of 0 or 1 (919/919). Across the Penumbra trials, the time from PS on to off and overall procedure length have shown a significant decrease over time (p<0.0001, p=0.0001 ). From 2006 to 2011, the time from PS on to off decreased an average of 5 minutes per year. The reduction in time from PS on to off is also significantly associated with the increased catheter size (p=0.0001). Similarly, the average procedure time decreased significantly with the newer catheters from 99.9 minutes (SD=46.7) using the 026 catheter to 65.6 minutes (SD=36.3) using the 054 catheter (p<0.0001). Ultimately, shorter procedure time was a significant predictor of good outcome, measured by mRS score of 0 or 1 (p=0.021). Conclusion: These results suggest that the implementation of the newer and larger Penumbra catheters provides a quicker and more effective treatment method for treating acute ischemic stroke.

Abstract WP14: Higher Aspiration Force Improves Technical Outcomes in ADAPT Thrombectomy for Ischemic Stroke

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Reda M Chalhoub ◽  
Ali M Alawieh ◽  
Clayton Korson ◽  
Mohammad Anadani ◽  
Jonathan Lena ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Lower Number ◽  
Stent Retriever ◽  
Complication Rates ◽  
Procedure Time ◽  
Aspiration Thrombectomy ◽  
Patient Demographics ◽  
Significant Difference ◽  
Catheter Size ◽  
The Impact

Introduction: Aspiration thrombectomy using the direct aspiration at first pass technique (ADAPT) has been shown to be non-inferior to stent-retriever thrombectomy in ischemic stroke trials. Favorable outcomes after ADAPT are dependent on successful recanalization and lower number of aspiration attempts. We investigated the impact of aspiration force on technical and clinical outcomes of ADAPT by modulating two underlying determinants, the aspiration catheter size and the reperfusion pump power. Methods: We performed a retrospective analysis of patients undergoing ADAPT thrombectomy between 01/2018 and 02/2019. Patient treated using ADAPT were included irrespective of age, onset to groin or whether thrombolytic therapy was administered. Patient demographics and outcomes were reviewed from patient charts and thrombectomy procedure notes. Patients were dichotomized based on the reperfusion pump used (MAX, 28.5 inHb power vs ENGINE, 29.2 inHg power) and further split into the different reperfusion catheters used. Results: This study included 194 patients who underwent ADAPT thrombectomy during the study period with mean age of 69, and of which 48% were females. Comparing patients treated with two different reperfusion pumps, ENGINE (N=73) and MAX (N=118), similar rates of favorable outcomes measured by 90-day modified Rankin score (mRS) were observed. However, patients in the ENGINE groups had significantly shorter procedure time (20 vs 27 min, p<0.05), lower number of aspiration attempts (1.9 vs 2.2 p<0.05), and low rates of rescue stent retriever therapy (14% vs 33%, p<0.05). The use of ENGINE was an independent predictor of shorter procedure time (p<0.05) and lower rates of symptomatic hemorrhage (p<0.1) compared to MAX pump. There was no significant difference in procedure time and rates of functional outcomes among patients undergoing ADAPT using different sizes of large bore catheters ACE 60, ACE68 and Jet 7. Conclusion: Success of ADAPT thrombectomy is dependent on successful aspiration of the occluding clot, and is dependent on the aspiration force. Higher aspiration forces can be achieved by increasing the power of reperfusion pump leading to better technical outcomes without increased complication rates.

Abstract TP215: Machine Learning Analysis of Gene Expression Data and Predictive Stroke Outcomes in Acute Ischemic Stroke

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Sarah R Martha ◽  
Qiang Cheng ◽  
Liyu Gong ◽  
Lisa Collier ◽  
Stephanie Davis ◽  
...  
Keyword(s):  
Gene Expression ◽  
Machine Learning ◽  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Mechanical Thrombectomy ◽  
Stroke Patients ◽  
Stroke Outcomes ◽  
Inflammatory Genes ◽  
Patient Demographics ◽  
Edema Volume

Background and Purpose: The ability to predict ischemic stroke outcomes in the first day of admission could be vital for patient counseling, rehabilitation, and care planning. The Blood and Clot Thrombectomy Registry and Collaboration (BACTRAC; clinicaltrials.gov NCT03153683) collects blood samples distal and proximal to the intracranial thrombus during mechanical thrombectomy. These samples are a novel resource in evaluating acute gene expression changes at the time of ischemic stroke. The purpose of this study was to identify inflammatory genes and patient demographics that are predictive of stroke outcomes (infarct and/or edema volume) in acute ischemic stroke patients. Methods: The BACTRAC study is a non-probability, convenience sampling of subjects (≥ 18 year olds) treated with mechanical thrombectomy for emergent large vessel occlusion. We evaluated relative concentrations of mRNA for gene expression in 84 inflammatory molecules in static blood distal and proximal to the intracranial thrombus from adults who underwent thrombectomy. We employed a machine learning method, Random Forest, utilizing the first set of enrolled subjects, to predict which inflammatory genes and patient demographics were important features for infarct and edema volumes. Results: We analyzed the first 28 subjects (age = 66 ± 15.48, 11 males) in the BACTRAC registry. Results from machine learning analyses demonstrate that the genes CCR4, IFNA2, IL9, CXCL3, Age, DM, IL7, CCL4, BMI, IL5, CCR3, TNF, and IL27 predict infarct volume. The genes IFNA2, IL5, CCL11, IL17C, CCR4, IL9, IL7, CCR3, IL27, DM, and CSF2 predict edema volume. There is an intersection of genes CCR4, IFNA2, IL9, IL7, IL5, CCR3 to both infarct and edema volumes. Overall, these genes depicts a microenvironment for chemoattraction and proliferation of autoimmune cells, particularly Th2 cells and neutrophils. Conclusions: Machine learning algorithms can be employed to develop predictive biomarker signatures for stroke outcomes in ischemic stroke patients, particularly in regard to identifying acute gene expression changes that occur during stroke.

scholarly journals 3224 Impact of aortic arch anatomy on technical performance and clinical outcomes in acute ischemic stroke patients

2019 ◽  
Vol 3 (s1) ◽  
pp. 146-147
Author(s):  
Joseph A Knox ◽  
Judy Ch’ang ◽  
Daniel Murph ◽  
David Mccoy ◽  
Daniel Cooke
Keyword(s):  
Ischemic Stroke ◽  
Carotid Artery ◽  
Acute Ischemic Stroke ◽  
Aortic Arch ◽  
Clinical Outcomes ◽  
Significant Positive Correlation ◽  
Procedure Time ◽  
Femoral Access ◽  
Positive Correlation ◽  
The Impact

OBJECTIVES/SPECIFIC AIMS: This study aims to examine the relative impact of aortic arch and carotid artery anatomy on the procedural times and clinical outcomes in patients who have suffered acute ischemic strokes (AIS). Mechanical thrombectomy remains the gold-standard of care for large vessel ischemic stroke. Given that short procedural times are necessary for good clinical outcomes, arterial access is an important technical consideration. It has been recently demonstrated that abnormal carotid artery anatomy can increase endovascular procedure times in this patient population. However, there are no studies examining the impact of aortic arch anatomy on operative times. Additionally, no studies have looked at the impact of aortic arch and carotid artery tortuosity on clinical outcomes in AIS. Thus, we sought to exam the influence of various aortic arch and carotid artery anatomic variables on interventional procedure times and clinical outcomes. METHODS/STUDY POPULATION: We included 56 patients who underwent embolectomy with successful revascularization for acute ischemic stroke in the anterior circulation from a period of 01/2016-05/2018. The average age was 71 (+/− 17 years) with 39% being male. We calculated anatomic variables on the affected side from CT angiograms immediately prior to embolectomy including the medial-to-lateral span, as well as the anterior-to-posterior span, of both the aortic arch and carotid arteries. In addition, the take-off angle of the respective vessel (left common carotid or right brachiocephalic) was calculated. Charts were reviewed for procedural times and epidemiologic information (HTN, HLD, DM, CAD and Afib). Modified Rankin Scale (mRS) was calculated from PT/OT and outpatient neurology notes. Partial correlation coefficients were performed between anatomic variables, temporal variables and outcome variables after adjustment for age, gender and epidemiologic information. RESULTS/ANTICIPATED RESULTS: There was a significant positive correlation between procedure time (time at groin puncture to time at reperfusion) and take-off angle. There were no other significant correlations between anatomic measures and procedure time. In addition, there was as a significant positive correlation between both procedure time and time from last seen normal to reperfusion and delta mRS (the difference between pre-stroke and post-stroke mRS). DISCUSSION/SIGNIFICANCE OF IMPACT: These results suggest that patients with larger take-off angles have an association with longer procedural times and worse outcomes. If these patients can be effectively identified prior to the procedure, operators could feasibly use a non-femoral access method initially to reduce procedure time.

scholarly journals Rescue Therapy in Endovascualr Treatment for Acute Ischemic Stroke Due to Large Artery Atherosclerosis

2019 ◽  
Author(s):  
Mingli Liu ◽  
Minghui Chen ◽  
Yang Liu ◽  
Lin Lin ◽  
Yongli Li ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Endovascular Treatment ◽  
Acute Ischemic Stroke ◽  
Rescue Therapy ◽  
Large Artery ◽  
Procedure Time ◽  
Excellent Outcome ◽  
Logistic Analysis ◽  
Tandem Occlusion ◽  
Stroke Center

Abstract Background and purpose Safety and predictors of rescue therapy in patients with acute ischemic stroke due to large artery atherosclerosis still remain unclear. This study aimed to test safety of rescue therapy and evaluate predictors of it after failed mechanical thrombectomy.Methods This retrospective study enrolled consecutively 245 patients with acute ischemic stroke treated by endovascular treatment from March 2016 to April 2019 in a single stroke center. We analyzed the clinical data and laboratory test for safety and predictors of rescue therapy. Binary logistic analysis was applied to confirm the independently relationship.Results There were totally 145 patients enrolled among 245 patients. Rescue therapy was independently associated with the excellent outcome [p=0.048, adjusted OR: 2.655, 95%CI: 1.008 – 6.989] and longer procedure time of endovascular treatment [p=0.004, adjusted OR: 3.722, 95%CI: 1.519-9.122], but there was no significance on complications and mortality. Prestrike incidence [p=0.004, adjusted OR:4.427, 95%CI:1.618-12.114], use of rt-PA [p=0.003, adjusted OR:4.792, 95%CI:1.688-13.602], tandem occlusion [p=0.001, adjusted OR:0.021, 95%CI:0.002-0.194], PLT [p=0.012, adjusted OR:3.234, 95%CI:1.289-8.113], P-LCR>42.3% [p=0.031, adjusted OR:0.132, 95%CI:0.021-0.827] were independent predictors of rescue therapy.Conclusions Rescue therapy for acute ischemic stroke due to large artery atherosclerosis costs more procedure time of endovascular treatment, but it can successfully recanalize the occlusive large artery and is independently related to the excellent clinical outcome without increasing ICH, sICH, reocclusion and others. Prestroke incidence, use of rt-PA, tandem occlusion, PLT and P-LCR may be independent predictors of rescue therapy in acute ischemic stroke due to large artery atherosclerosis.

scholarly journals Cervical internal carotid artery tortuosity: A morphologic analysis of patients with acute ischemic stroke

2019 ◽  
Vol 26 (2) ◽  
pp. 216-221
Author(s):  
John C Benson ◽  
Waleed Brinjikji ◽  
Steven A Messina ◽  
Giuseppe Lanzino ◽  
David F Kallmes
Keyword(s):  
Ischemic Stroke ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Acute Ischemic Stroke ◽  
Internal Carotid ◽  
Large Vessel ◽  
Large Vessel Occlusion ◽  
Procedure Time ◽  
Vessel Occlusion ◽  
Cervical Internal Carotid Artery

Background and purpose Cervical internal carotid artery (ICA) tortuosity is thought to impede distal catheterization during attempted mechanical thrombectomy in patients with acute ischemic stroke. This study sought to assess the morphologic characteristics of ICAs and the effects of tortuosity on thrombectomy attempts. Methods A retrospective review was completed of neck CTAs of patients with acute ischemic stroke due to a large vessel occlusion that underwent attempted endovascular recanalization. Significant tortuosity of ICAs was defined as the presence of kink(s) (acute (<90°) angulation), loop(s) (C- or S-shaped curvature with 2+ areas of acute (<90°) angulation), or coil(s) (full 360° turn arterial bend). Findings were statistically compared to procedure time, successful recanalization rate, patient demographics, and co-morbidities. Results Of 120 included patients, 47 (39.2%) had some form of tortuosity of one or both ICAs. Twenty-eight patients (23.3%) had a kink of one or both ICAs; this was followed in frequency by loops (n = 20; 16.7%) and coils (n = 8; 6.7%). Kinks were associated with lower rates of successful recanalization (p = 0.02). The presence of any tortuosity (kinks, loops, or coils) was not associated with number of passes during thrombectomy (p = 0.88), successful recanalization (p = 0.11), or total procedure time (p = 0.22). No association was noted between the presence of tortuosity and age (p = 0.96) or prior or current tobacco use (p = 0.75 and p = 0.69, respectively). Conclusion Among patients referred for urgent revascularization for large vessel occlusion, approximately 40% exhibit some tortuosity. Kinks may portend lower likelihood of recanalization success, although tortuosity as a whole seems to have little effect on endovascular thrombectomy.

scholarly journals Intravenous thrombolysis in acute ischemic stroke – our experience

2017 ◽  
Vol 31 (2) ◽  
pp. 137-145
Author(s):  
Tudor Cuciureanu ◽  
Diana Hodorog ◽  
Iulian Dan Cuciureanu
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Intravenous Thrombolysis ◽  
Recombinant Tissue Plasminogen Activator ◽  
Treatment Method ◽  
Therapeutic Window ◽  
Major Health Problem ◽  
Common Cause ◽  
Epilepsy In The Elderly ◽  
Retrospective Clinical Study

Abstract Stroke is a major health problem worldwide and nationally: the second leading cause of death and dementia, the most common cause of epilepsy in the elderly, and a common cause of depression. Stroke is associated with an increased rate of morbidity, but it is also the leading cause of long-term morbidity and disability in industrialized countries. Thrombolysis by administering intravenous recombinant tissue plasminogen activator (IV-rtPA) is the only treatment method “in the therapeutic window” recognized in international protocols. The benefit-risk ratio should be evaluated on a case-by-case basis, with the neurologist’s decision being individual and often difficult. The aim of our study was to analyze the outcome of this procedure in our hospital since 2015. We performed a retrospective clinical study of 77 patients with acute ischemic stroke subjected to IV-rtPA. Most patients with ischemic stroke undergoing intravenous thrombolysis did not receive chronic antithrombotictherapy. In most cases (76%) there was a decrease in the NIHSS score at 24 hours after thrombolysis and especially after 7 days (between 3 and 19 points), reflecting a reduction in poststroke disability in thrombolyzed patients. In the series of patients undergoing i.v. thrombolysis 5 deaths (10%) were recorded, the lowestrate of data/death ratereported in the literature (14-18%).

scholarly journals Therapeutic effect of pre-operative tirofiban on patients with acute ischemic stroke with mechanical thrombectomy within 6–24 hours

2019 ◽  
Vol 25 (6) ◽  
pp. 705-709 ◽  
Author(s):  
Ying Luo ◽  
Yang Yang ◽  
Yang Xie ◽  
Zhengzhou Yuan ◽  
Xiaogang Li ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Therapeutic Effect ◽  
Mechanical Thrombectomy ◽  
Endovascular Procedure ◽  
Histopathological Analysis ◽  
Procedure Time ◽  
Vessel Occlusion ◽  
Nihss Score ◽  
Group B

Objective The objective of this study was to investigate and discuss the therapeutic effect of pre-operative tirofiban on patients with acute ischemic stroke (AIS) with mechanical thrombectomy (MT) within 6–24 h. Patients and methods We retrospectively queried our AIS database from January to November 2018, and selected 99 patients with AIS within 6–24 h and evidence of proximal large vessel occlusion who were suitable for MT. They were divided into two groups, group A (with tirofiban, n = 56) and group B (without tirofiban, n = 43), according to whether they were intravenously infused with tirofiban before MT. The baseline characteristics and outcomes of patients were subjected to statistical analysis, including age, gender and risk factors, occlusion site, the time from onset to door, time of door to puncture, baseline National Institutes of Health Stroke Scale (NIHSS), pre-operative Alberta stroke programme early CT (ASPECT) score, angioplasty/stenting, modified Rankin Scale score 0–2 at 3 months, symptomatic haemorrhage and mortality, the time of door to recanalization, endovascular procedure time, 7-day (7d) NIHSS score, and a modified treatment in cerebral infarction (m-TICI) grade of 2b or 3. All of the thrombi were analysed by histopathology. Results The differences in the time of door to recanalization, endovascular procedure time, 7d NIHSS score and the m-TICI were significantly different between groups ( P < 0.05). The other agents were not significantly different between groups ( P > 0.05 each). Histopathological analysis showed that all thrombi contained different amounts of platelets, fibrinogen, Haemamoebas and red blood cells. Conclusion The use of tirofiban before MT can shorten the procedure time and improve the recanalization rate of occluded vessels in AIS patients.

scholarly journals Efficacy of beveled tip aspiration catheter in mechanical thrombectomy for acute ischemic stroke

2020 ◽  
pp. neurintsurg-2020-016695
Author(s):  
Jan Vargas ◽  
Jonathan Blalock ◽  
Anand Venkatraman ◽  
Vania Anagnostakou ◽  
Rrobert M King ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Cerebral Infarction ◽  
Acute Ischemic Stroke ◽  
Retrospective Analysis ◽  
Mechanical Thrombectomy ◽  
Modified Rankin Scale ◽  
Aspiration Thrombectomy ◽  
Patient Demographics ◽  
Significant Difference ◽  
Tissue Plasminogen

BackgroundDirect aspiration thrombectomy techniques use large bore aspiration catheters for mechanical thrombectomy. Several aspiration catheters are now available. We report a bench top exploration of a novel beveled tip catheter and our experience in treating large vessel occlusions (LVOs) using next-generation aspiration catheters.MethodsA retrospective analysis from a prospectively maintained database comparing the bevel shaped tip aspiration catheter versus non-beveled tip catheters was performed. Patient demographics, periprocedural metrics, and discharge and 90-day modified Rankin Scale (mRS) scores were collected. Patients were divided into two groups based on which aspiration catheter was used.ResultsOur data showed no significant difference in age, gender, IV tissue plasminogen activator administration, admission NIH Stroke Scale score, baseline mRS, or LVO location between the beveled tip and flat tip groups. With the beveled tip, Thrombolysis in Cerebral Infarction (TICI) 2C or better recanalization was more frequent overall (93.2% vs 74.2%, p=0.017), stent retriever usage was lower (9.1% vs 29%, p=0.024), and patients had lower mRS on discharge (median 3 vs 4, p<0.001) and at 90 days (median 2 vs 4, p=0.008).ConclusionPatients who underwent mechanical thrombectomy with the beveled tip catheter had a higher proportion of TICI 2C or better and had a significantly lower mRS score on discharge and at 90 days.

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